Disorder effects in Mn12-acetate at 83 K

Cornia, A.; Fabretti, A. C.; Sessoli, R.; Sorace, L.; Gatteschi, D.; Barra, A. L.; Daiguebonne, C.; Roisnel, T.

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Disorder effects in Mn₁₂-acetate at 83 K

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Sorace, L.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Barra, A. L.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Cornia, A., Fabretti, A. C., Sessoli, R., Sorace, L., Gatteschi, D., Barra, A. L., et al. (2002). Disorder effects in Mn₁₂-acetate at 83 K. Acta Crystallographica C, 58, m371-m373.

Cite as: https://hdl.handle.net/21.11116/0000-000E-ECF1-8

Abstract

The structure of hexadeca-mu-acetato-tetraaquadodeca-mu(3) oxo-
dodecamanganese bis(acetic acid) tetrahydrate, [Mn12O12
(CH3COO)(16) (H2O)(4)].2CH(3)COOH.4H(2)O, known as Mn-12-
acetate, has been determined at 83 (2) K by X-ray diffraction
methods. The fourfold (S-4) molecular symmetry is disrupted by
a strong hydrogen-bonding interaction with the disordered
acetic acid molecule of solvation, which displaces one of the
acetate ligands in the cluster. Up to six Mn-12 isomers are
potentially present in the crystal lattice, which differ in the
number and arrangement of hydrogen-bonded acetic acid
molecules. These results considerably improve the structural
information available on this molecular nanomagnet, which was
first synthesized and characterized by Lis [Acta Cryst. (1980),
B36, 2042-2046].